Seat-trimmer.



A. LAING.

SEAT TRIMMER.

APPLICATION FILED SEPT. 17. 1913.

1,1 34,874, Patented Apr. 6, i915.

FIG!

Woavze y HE NORRIS PETERS CO. PHOTO-LITHQ. WASHINGTON, D. C.

ANDREW LAING, OF DUNEDIN, NEW ZEALAND.

SEAT-TRIMMER.

Specification of Letters Patent.

Patented Apr. 6, 1915.

Application filed September 17, 1913. Serial No. 790,306.

To all whom it may concern Be it known that I, ANDREW LAING, a boot and shoe maker, a subject of His Majesty the King of Great Britain, residing at Dundas street, in the city of Dunedin, in the British Dominion of New Zea.- land, have invented certain new and useful Improvements in Seat-Trimmers, and do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to trim the seat of the outsole of any footwear, such as a boot, shoe and the like in a neater, simpler and more expeditious manner than is usual at present in such work. For this purpose I form a light knife bent to the shape required, which is somewhat semicircular, with the ends extended and opened out bell-mouth fashion, for the easier introduction of a boot. This is secured to a suitable frame and it is sufficiently springy to allow of several sizes of seats being introduced, but as many of these knives as necessary are made with provision for instantly removing one and fitting in another by a few turns of a bolt. When in the machine and ready for use, a boot is pushed backward into the encircling knife but without quite touching its sharp edge, and the platform rising trims each alike.

Referring to the accompanying drawing: Figure 1 is a front elevation and Fig. 2 is a side elevation with parts removed to show the cam movement. Fig. 3 is a detail of the knife and Fig. 4, of its connection to its frame.

A is the machine framing, A the pulleys, A the gearing.

B is the thrust plate, B the bolt to secure the frame carrying the knife C. This knife is riveted to frame C by rivets C advantage being taken of the rivet heads to keep the part of the boot not to be out, from the knife edge.

C is the soft bed for cutting on, usually lead. The knife is beveled on the outside and is straight inside, as shown, for a down out.

D is the cam mounted on a horizontal shaft A which cam is arranged as shown to allow the roller D and consequently, the guided rising platform D to be at the low point for most of the revolution, the point of the cam causing a quick rise and a quicker fall "at intervals which are of sufficient duration to permit a trimmed boot to be taken away and another inserted for trimming.

D is the rod connecting platform D with roller wheel D E E are the guides for this platform D the upper portion of these guides being threaded to permit ad- ]ustment of the position of top plate B as needed.

F, dotted, is a boot in position, being with a pair of vertical guide rods having their upper portions threaded; a verticallyadjustable thrust plate having its ends engaged with the threaded portions of said rods; a depending knife frame, carried by said plate; a U-shaped knife attached to the lower end of the knife frame and having out-turned ends; a platform disposed beneath said plate and slidably connected at its ends with said rods, for movement toward and from said knife; a cutting bed carried by said platform; a vertical rod having said platform fastened to its upper end and provided at its lower end with a roller; a horizontal shaft mounted in the lower portion of the main frame; meansfor driving said shaft; and a cam secured to. said shaft and engaging said roller, for raising the last-named rod and permitting the same to fall by gravity.

FENTON MAOAULAY DAVEY, JAMES STEVENS.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents.

Wa i g on, D. G. 

